A 3 cm long copper wireis stretchedto increase its length by 0.3 cm. findthe lateralstrainin the wire, if the Poisson.s ratio for copper is 0.26.

A 3 cm long copper wireis stretchedto increase its length by 0.3 cm. f

1.	A 3 cm long copper wireis stretchedto increase its length by 0.3 cm. findthe lateralstrainin the wire, if the Poisson.s ratio for copper is 0.26.
Answer» Solution : L = 3cm, `DELTA L = 0.3cm, SIGMA= 0.26`. Longitudinal STRAIN `(DELTAL)/(L) = (0.3)/(3) = 0.1` `sigma ` =Lateral Strain /Longitudinal Strain The Lateral Strain ` = sigma xx `Longitudinal Strain `= 0.26 xx 0.1 = 0.026`